Please, for all that is holy, take your cats indoors. They are now classified as an invasive species (link to more info below). If you want to trap stray cats for the health of the wildlife in your community, you can borrow humane traps from the Animal Welfare Department <http://www.okc.gov/animalwelfare/>, or buy them online: <http://www.havahart.com/feral-cat-trap-rescue-kit> (the cover is important to keep them calm -- be sure to let opossums and skunks go!).

@bobodod@identi.ca what about the homo sapiens they are doing way more damage the the felines.. In fact they are the number one vector for the spread of felines.. I think we should worry about the big problem that will destroy the planet before we go crazy on cats.